caride roughing reamer

S

skeetlee

Active member
Any of you fellas have any experience with a PT&G carbide roughing reamer? I recently picked a new 6ppc carbide rougher from a good man that never got around to using it. Anyway i have a couple questions. Ill try to get in touch with dave Kiff but that can prove to be difficult at best, and i dont always trust the ladies that answer the phones there. "Long story, actually a couple of them." Anyway i need to know what speed to turn the chuck while using this caride reamer? Im guessing at least 300RPM on the chuck?? Also the removable bushing on this reamer is about twice as long as a standard HSS reamer bushing. Do i need a seperate set of bushings or do i just use the shorter bushing?
Ill get to the bottom of all this one way or another but i thought i might see if someone here had some info first. Thanks lee
 
Most folks run a carbide rougher at 320 RPM on a lathe and 650 RPM on the CNC turning center but a few folks tell me that 180 to220 works for them. I have been selling the heck out of carbide rougher's and finishers. Thanks Dave
 
Hey, Dave
What is the reason for the extra long pilot bushings on the carbide reamers? I didn't know when I ordered these 30 cal carbide reamers they were gonna use different pilot bushings.
Sometimes people send me their reamer to chamber their barrel so I have used a few carbide reamers, I don't remember seeing long pilots on the carbide PT&G reamers is this something new?
 
Jay
My carbide reamer is dated 2010 and it has the long bushing. Looks like we get to buy a new set of bushings. Lee
 
skeetlee said:
Jay
My carbide reamer is dated 2010 and it has the long bushing. Looks like we get to buy a new set of bushings. Lee
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I have 2 30 cal carbide reamers a 308 win and a 300 win mag and I'm thinking I could probly do most barrels, at least the ones I'll buy, with a 2995 to 2997 pilot bushing. With the C clip retainers being a pita I will probably outfit both reamers with a 2995 pilot and use them and keep the .300 pilots to custom grind 1 for a tight barrel and leave the other for an occasionally oversize bore.
 
skeetlee said:
Any of you fellas have any experience with a PT&G carbide roughing reamer? I recently picked a new 6ppc carbide rougher from a good man that never got around to using it. Anyway i have a couple questions. Ill try to get in touch with dave Kiff but that can prove to be difficult at best, and i dont always trust the ladies that answer the phones there. "Long story, actually a couple of them." Anyway i need to know what speed to turn the chuck while using this caride reamer? Im guessing at least 300RPM on the chuck?? Also the removable bushing on this reamer is about twice as long as a standard HSS reamer bushing. Do i need a seperate set of bushings or do i just use the shorter bushing?
Ill get to the bottom of all this one way or another but i thought i might see if someone here had some info first. Thanks lee
Click to expand...

Some times I just have to stiffle myself, good on you Dave Kiff for your timely reply:cool:.

Dan Honert
 
Dan H said:
Some times I just have to stiffle myself, good on you Dave Kiff for your timely reply:cool:.

Dan Honert
Click to expand...

I have a longer bushing on the carbide reamers so they can be pulled back for chip flush if used in a CNC . The oil grooves are ground in the bushing instead of the tool to make it much stronger . Some manufacturers run our carbide rougher and finishers @ 1300 RPM and the combination of the two tools in a CNC will chamber a barrel in 1minute and 30 seconds . I can only achieve that with this special oil grooved longer bushing . I have tried years ago to put our thin steel reamer bushings on and with the carbide snap ring you cant get much oil thru . I like our steel reamer screw style better but the carbide companies that make our raw blanks will not thread the end and guarantee they will not break . Remember carbide rougher's on a manual machine can run about any speed because of their three flute design with chip breakers but carbide finishers need high RPM and should be used with muzzle flush @350 RPM or higher and I know some folks are running them slower but I always go with the feeds and speeds in the Machinist Hand Book . Thanks Dave
 
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